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71454430 = 257145443
BaseRepresentation
bin1000100001001…
…00111011011110
311222110021001101
410100210323132
5121243020210
611031303314
71525231645
oct420447336
9158407041
1071454430
1137374853
121bb1ab3a
1311a5a838
1496c035c
156416a3a
hex4424ede

71454430 has 8 divisors (see below), whose sum is σ = 128617992. Its totient is φ = 28581768.

The previous prime is 71454413. The next prime is 71454503. The reversal of 71454430 is 3445417.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3572712 + ... + 3572731.

It is an arithmetic number, because the mean of its divisors is an integer number (16077249).

Almost surely, 271454430 is an apocalyptic number.

71454430 is a deficient number, since it is larger than the sum of its proper divisors (57163562).

71454430 is a wasteful number, since it uses less digits than its factorization.

71454430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7145450.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 71454430 is about 8453.0722225709. The cubic root of 71454430 is about 414.9633296093.

Adding to 71454430 its reverse (3445417), we get a palindrome (74899847).

The spelling of 71454430 in words is "seventy-one million, four hundred fifty-four thousand, four hundred thirty".

Divisors: 1 2 5 10 7145443 14290886 35727215 71454430